Be sure to do some eye exercises to relax your eyes after you study for a long period of time.
在长时间学习后，一定要做眼保健操来放松眼睛。
In fact, there is another type of friend—one that has not been with us for a long period of time, but fills our mind at some moment.
事实上，还有另一种朋友，他虽然很长一段时间没有和我们在一起，但却会在某个时刻充满我们的心灵。
The manager and the businessman talked for a long period of time, but when he was asked for advice, the businessman stopped for a while and then said, "I have no advice to give."
经理和商人谈了很长一段时间，但当商人被问及建议时，他停顿了一会儿，然后说：“我没有什么建议可以给你。”
Smoking a lot of cigarettes can harm and even kill over a long period of time.
长期大量吸烟会危害身体健康，甚至导致死亡。
Oil or vinegar based salad can be stored for a long period of time without refrigeration.
含油或醋的沙拉可以储存很长一段时间，而且不需要冷藏。
Trackers, which are ongoing projects that look at trends or customer satisfaction over a long period of time.
一个正在进行的项目——“追踪者”，在研究很长一段时期内的趋势或客户满意度。
For a long period of time and in many parts of the country, a traveler was a welcome break in an otherwise dull existence.
很长一段时间，在美国的许多地方，旅行者是一种受欢迎的打破沉闷生活的方式。
Diabetes is caused by a group of metabolic disorders in which there are high blood sugar levels over a long period of time.
糖尿病是由一组代谢紊乱引起的，代谢紊乱后，血糖水平长期偏高。
For a long period of time and in many parts of the country, a traveler was a welcome break in an otherwise dull existence.
很长一段时间，在美国的许多地方，旅行者是一种受欢迎的打破沉闷生活的方式。
Occasionally , a sequence of fossil-rich layers of rock permits a comprehensive look at one type of organism over a long period of time.
偶尔，一个富含化石的岩层序列可以让我们持续并全面地观察一种生物。
In such studies, researchers would need to follow groups of children with and without music lessons over a long period of time—even if the assignments are not completely random.
在此类研究中，研究人员需要在很长一段时间内对上音乐课和未上音乐课的不同小组的儿童进行追踪——即使任务并不是完全随机的。
The empty shell of a snail or clam may be left behind, and if it is sufficiently durable and resistant to dissolution, it may remain basically unchanged for a long period of time.
蜗牛或蛤蜊的空壳可能会被留下来，如果足够持久和抗溶解，它可能会在很长一段时间内基本保持不变。
The bar was formed by the mud and sand deposited here over a long period of time.
河里的泥沙淤积在这里，年深日久便成了沙洲。
This is the only way to keep that motivation going over a long period of time.
这是唯一能让动机持续相当长一段时间的办法。
Gojko: Story CARDS aren't really intended to be kept for a long period of time.
Gojko：故事卡本意并不会长期保存。
Anyone who sits down for a long period of time may be at risk, the researchers say.
研究人员说，所有坐很长时间的人都处于危险之中。
It will lead to CANCER if it is stored in our body system for a long period of time.
如果储存在我们的身体系统有很长一段时间，这将导致癌症。
If they transmit heat to our cells, they can damage tissue over a long period of time.
如果磁场加热了细胞，就会对我们的组织造成长期性的损伤。
Over a long period of time, though, even a smallish difference in compile times adds up.
但是，时间一久，编译时间上的微小差异也会累积成明显的差异。
How can you motivate a person to be a team player after a long period of time as a loner?
如何才能让一个不合群的人富有团队精神呢？
The prospect of high unemployment for a long period of time remains a central concern of policy.
长时间内高失业率的前景将成为政策关注的焦点。
Paradoxically, all painkillers can cause a headache if taken regularly over a long period of time.
一个悖论是，所有的止痛药，如果长时间服用都可能导致头疼。
Eczema is a common disease that occurs when soldiers stand in the water for a long period of time.
战士们长时间站在水中很容易染上湿疹。
Fortunately [sustaining focus for a long period of time] can be acquired and sharpened through training.
好在[长时间保持注意力]可以通过训练实现和提高。
They won public opinion over a long period of time. But it took 24 years for the campaign to be successful.
在很长的一段时间里，这些反对者都拥有着民众的支持，但整场运动却是花费了24年的时间才取得最终的胜利。
When it is struck, a tuning fork produces an almost puretone, retaining its pitch over a long period of time.
音叉被敲击时，产生几乎纯质的音调，其音量经久不衰。
Career superpowers are actions that come easily to you, are fun and you can do them for a long period of time.
事业上的超强能力，是那些对你来说很容易的行为，你做起来很有趣，而且能长时间来做的事情。
Another scenario where this may be useful is if the messages in a group are spread over a long period of time.
此机制的另一个可用场景为组中的消息分散在很长的时间内进行传递。
This fallout material decays over a long period of time, and is the main source of residual nuclear radiation.
尘降物需要很长的时间才会衰减，这是核辐射残留的主要来源。
When it is struck, a tuning fork produces an almost pure tone, retaining its pitch over a long period of time.
音叉被敲击时，产生几乎纯质的音调，其音量经久不衰。
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